LOS ANGELES (thefutoncritic.com) -- ABC has shifted the season finale of "Detroit 1-8-7" to Sunday, March 20 at 10:00/9:00c, network sources have confirmed to the site exclusively.

The Alphabet is pre-empting the series for a "20/20" special ("Charlie Sheen: In His Own Words") tomorrow night.

The bumped installment ("Stone Cold") will now air on Tuesday, March 8 at 10:00/9:00c with "Motor City Blues" on March 15 and "Blackout" on March 20. A repeat of "Brothers & Sisters" was previously slated for the latter slot.

The aforementioned changes ensure all 18 episodes of "Detroit" will air.